Process of purifying syrup.



UNITED STATES seer AVAELAEBLE coe- Patented August 23, 1904.

PATENT OFFICE.

PROCESS [OF PURIFYING SYRUP.

SPECIFICATION forming part of Letters Patent N0. 768,130, dated August 23, 1904. Application filed March 3, 1902. Serial No. 96,436. (No specimens.)

To (all whom ifnmrg concern:

Be it known that l, MmezrseawKOWALsKI, residing at Vl'arsaw, Poland, Russia, have invented certain new and useful Improvements in a new Improved Process of Purifying by Extraction the Syrups, Drainings,-and Molasses Obtained in the Manufacture of Sugar; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the same.

This invention relates to a new and useful process for purifying the syrups, (lrainings, and molasses obtained in the manufacture of sugar. Syrups, drainings, and molasses purified by this process may also be used in the arts --as, for instance, for finishing purposes in the manufacture of textiles and in tan-- ning, &c.

in carrying out my process thedrainmgs,

syrups, or molasses are first diluted to the con sistencyoffrom 41) to Bx, Raw or boiled phenol is then added to the extent of one per cent. and more in quantity equal to the quantity of non-saccharine matter contained in the syrups, drainings, or molasses, after which the latter are thoroughly stirred in an emulsimate contact between the liquid, phenol, and

up to eighty per cent. of the non-saccharine matter contained in the solutions is removed. Besides this a decolorizing effect of about eighty per cent. (with molasses ninety-two per cent.) is obtained, and the viscosity is reduced by approximately sixty per cent. The liquid treated with phenol is protected against inversion. The quantity of phenol depends upon the degree of purity of the drainings, (or syrups.) ity require less phenol; those of a low degree more.

Instead of using phenol alone I may use phenol combined with petroleum or benzol or the like, this mixture being more intense in effect than phenol alone.

Very impure solutions. such as molasses, can for the purpose of better purification be treated with lime before the phenohzation or after the latter and sulfuration until a dis tinct alkaline reaction takes place, whereupon they are saturated with carbon dioxid (CO2) or sulfurous anhydrid (S02) until the alkalinity disappears. The liquid is then again phenolized and sulfureted. Molasses thus treated shows after boiling the same color as the masse-cuite of the first product and crystallizes into white sugar.

Vl'hat 1 claim is 1. The herein-described process of purifying the syrups, drainings and molasses obtained in the manufacture of sugar, which consists in first diluting such syrups, &c., as described, then adding phenol thereto which will absorb the non-saccharine matter contained in the syrups, drainings and molasses, then thoroughly mixing the mixture, then adding a bleaching agent, and then stirring the mixture and then separating the phenol with the combined non-saccharine matter from the mixture.

2. The herein-described process of purifying the syrups, drainings and molasses obtained in the manufacture of sugar, which consists Solutions of a high degree of pur- 9 768,130 REST AVAILABLE COP" in first diluting such syrups, &c., as described, molasses with the combined non-saccharine then adding phenol combined with henzol i matter from the mixture. 10 thereto, which will ahsor? the non-saccharine In testimony whereof I ufiix mysignatui'ein matter contained in the syrups, druinings and 1 presence of two Witnesses.

1n0lasses,then thoroughlymixingthc mixture, MIECZYSLAW KOWALSK]. [1,. .,.1

then adding a bleaching agent, stirring the Witnesses:

mixture and then separating the ingredients I CHAS. A. SAREZEWSKI,

added as above to the syrups, drainings and l ADAM Mloniwwum. 

